From 3664e46d2f3cf6f0c70d224e62a220d2de81d195 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Thu, 31 Aug 2017 16:57:50 +0800
Subject: [PATCH] =?UTF-8?q?Pivot=E6=9E=B6=E6=9E=84=E6=96=B9=E6=B3=95?=
 =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E9=BB=98=E8=AE=A4=E5=80=BC?=
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---
 library/think/model/Pivot.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/think/model/Pivot.php b/library/think/model/Pivot.php
index 06c6b181..259a8a03 100644
--- a/library/think/model/Pivot.php
+++ b/library/think/model/Pivot.php
@@ -28,7 +28,7 @@ class Pivot extends Model
      * @param array|object  $data 数据
      * @param string        $table 中间数据表名
      */
-    public function __construct(Model $parent, $data = [], $table = '')
+    public function __construct(Model $parent = null, $data = [], $table = '')
     {
         $this->parent = $parent;